Bright emission from a random Raman laser.
Bright emission from a random Raman laser.
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DOI：
10.1038/ncomms5356
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发表时间：
2014-07-11
影响因子：
16.6
通讯作者：
Yakovlev, Vladislav V.
中科院分区：
文献类型：
--
作者：
Hokr, Brett H.;Bixler, Joel N.;Cone, Michael T.;Mason, John D.;Beier, Hope T.;Noojin, Gary D.;Petrov, Georgi I.;Golovan, Leonid A.;Thomas, Robert J.;Rockwell, Benjamin A.;Yakovlev, Vladislav V.
随机激光器是一种发展中的光源，其利用与传统光学腔相反的高度无序的增益介质。虽然传统的随机激光器通常具有相对较宽的发射光谱，但通过拉曼散射利用振动跃迁的随机激光器允许极窄的带宽，约为10 cm−1。在这里，我们展示了第一个实验证据的激光通过拉曼相互作用在一个散装的三维随机介质，转换效率的几个百分点。此外，蒙特卡罗模拟被用来研究复杂的空间和时间的非线性过程中的动力学混浊介质。随机拉曼激光器除了提供拉曼介质特有的大信号外，还为我们研究混浊介质中的增益动力学提供了一种全新的工具。 与需要均匀谐振腔来操作的常规激光器不同，随机激光器使用高度无序的增益介质，其中散射占主导地位。Hokr等人报道了从体三维无序介质中产生的拉曼激光，其强度超过其他随机激光许多数量级。
Random lasers are a developing class of light sources that utilize a highly disordered gain medium as opposed to a conventional optical cavity. Although traditional random lasers often have a relatively broad emission spectrum, a random laser that utilizes vibration transitions via Raman scattering allows for an extremely narrow bandwidth, on the order of 10 cm−1. Here we demonstrate the first experimental evidence of lasing via a Raman interaction in a bulk three-dimensional random medium, with conversion efficiencies on the order of a few percent. Furthermore, Monte Carlo simulations are used to study the complex spatial and temporal dynamics of nonlinear processes in turbid media. In addition to providing a large signal, characteristic of the Raman medium, the random Raman laser offers us an entirely new tool for studying the dynamics of gain in a turbid medium. Unlike conventional lasers that require a uniform resonant cavity to operate, random lasers use a highly disordered gain medium in which scattering is dominant. Hokr et al. report Raman lasing from a bulk three-dimensional disordered medium whose intensity exceeds that of other random lasers by many orders of magnitude.
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影响因子：
64.8
作者：
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通讯作者：
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影响因子：
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影响因子：
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作者：
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通讯作者：
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作者：
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通讯作者：
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